QQ客服 官方微博 反馈留言

题名	基于空心光束的积分球冷却及小型化光学系统研究
作者	王鑫
文献子类	硕士
导师	成华东
关键词	激光冷却 Laser cooling 积分球冷原子钟 Integrating sphere cold atom clock 空心光束 Hollow laser beam 小型化光学系统 Integrated optical system
其他题名	Study on laser cooling using hollow beam in an integrating sphere and integrated optical system
英文摘要	本论文主要研究空心光束在积分球冷却中的应用。由于空心光束具有特殊的光场结构，其在冷原子导引和操控等方面具有重要应用，本论文首次将空心光束应用于积分球冷却。实验研究表明，利用空心光束可以增加积分球探测轴线的冷原子密度同时减少轴线周边的冷原子分布，从而提高探测信号的信噪比和对比度，这对优化积分球冷原子钟性能指标具有重要意义，同时也是对积分球冷却物理机制的新探索。稳定可靠的光学系统对积分球冷却和积分球冷原子钟非常重要，本论文基于外腔半导体激光器设计并搭建了集成化的光学系统，为积分球冷却和积分球冷原子钟提供了稳定可靠的光源。主要工作包括： （1）设计并实现了空心光束在柱形积分球内冷却铷原子的实验，并对积分球内冷原子密度分布进行测量，得到了轴线密度高， 周边密度低的冷原子分布，为进一步提高积分球冷原子钟性能奠定了基础。 （2）成功搭建了小型化光学系统，目前已应用于积分球冷原子钟系统，并对第一代小型化光学系统进行优化。; This thesis focuses on laser cooling atoms inside an integrating sphere with a hollow laser beam. Because the hollow laser beam has a special light field structure, one important application is the guidance and manipulation of the cold atoms. In this thesis, we firstly applies the hollow laser beam to the laser cooling in the integrating sphere. The density distribution of cold atoms in the integrating sphere is determined by the light field structure of the hollow laser beam. Thus most of the cold atoms locate in the central region of the hollow laser beam and the signal to noise ratio and the contrast of the detection signal will be improved. This is a new exploration of the diffuse light cooing and If we apply this method to the atomic clock, it’s performance would be improved further. A stable and reliable optical system plays a key role in laser cooling and in the integrating sphere cold atom clock. This thesis designs and builds an integrated optical system based on the external cavity semiconductor lasers, which provide a stable and reliable laser source for diffuse light cooling and the integrating sphere cold atom clock. Thesis are stated as follows. (1) The experiment of cooling atoms within a cylindrical integrating sphere by injection of the hollow laser beam has been designed and implemented. The cold atomic density distribution inside the integrating sphere has been carefully measured. The results show that the density along the axis is higher than that off the axis, which is benefit to improve the performance of the integrating sphere cold atom clock further. (2) The integrated optical system were successfully constructed and applied to the integrating sphere cold atom clock. Further improvement of the integrated optical system was implemented.
学科主题	光学工程
内容类型	学位论文
源URL	[http://ir.siom.ac.cn/handle/181231/31099]
专题	中国科学院上海光学精密机械研究所
作者单位	中国科学院上海光学精密机械研究所
推荐引用方式 GB/T 7714	王鑫. 基于空心光束的积分球冷却及小型化光学系统研究[D].

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。